Stewart Robert Einstein (November 20, 1942 – January 2, 2019) was an American actor, comedy writer, and producer. He created and performed the satirical stuntman character Super Dave Osborne, and was also known for his roles as Marty Funkhouser in Curb Your Enthusiasm, and Larry the Middleman on Arrested Development. Einstein got his start on several television variety shows; including The Smothers Brothers Comedy Hour and The Sonny & Cher... see more